43493

Appears in sequences

• Numbers k such that 4*10^k - 9 is prime.at n=12A101396
• Indices of records in A361321.at n=52A361326
• Least squarefree integer m > 1 such that the product of all those (p + 4)/(p + 2) (with p a prime divisor of m) equals (2*n + 1)/(2*n - 1).at n=5A375351